<html>
   <head>
      <style>
         body, html { border: 0; margin: 0; padding: 0; }
         #map { height: 100vh; width: 100vw; }
      </style>
      <script src="https://unpkg.com/three/build/three.min.js"></script>
      <script src="https://unpkg.com/@here/harp.gl/dist/harp.js"></script>
   </head>
   <body>
      <canvas id="map"></div>
      <script src="index.js"></script>
   </body>
</html>